If you are still looking, my past roommate still has his 34 gallon Current Solana sitting around unused. It is an awesome little cube. It is an all-in-one, but worked great for him as a reef. The return pump may still be a bit too strong for seahorses, though it was VERY weak for a reef so I may be ok. You could always put a spraybar on it and reduce the flow. It also has a matching square stand, that he custom built, and a DIY LED light that has all of the different LED's on separate dimmers.
Let me know if you are interested and I can talk to him about it. I know he has tried to sell it a couple of times so I think he would be willing to sell it now. The thing I don't know is what he will sell it for. Last time he was asking $600, but it had a lot more stuff with it, like a chiller and MP20 but those have already been sold.
Here are some REALLY old pictures of it, I couldn't find any recent pics. These were shortly after setting up the tank. There is no longer a halide or the fans.